Table 6.78 — DRM_Feature_Representation

Property

Description

Class

  • <DRM Feature Representation>

Superclass

Subclass

Definition

An instance of this DRM class represents an entity in the environment, or an organized collection of such entities, that specifies the properties of the entity in terms of its spatial connectivity.

Class diagram

Figure 6.93 — DRM_Feature_Representation

Inherited field elements

Field name

Range

Field data type

None

   

Field elements

Field name

Range

Field data type

None

   

Default field values

Default field values for DRM_Feature_Representation

Associated to (one-way) (inherited)

  • None.

Associated to (one-way)

Associated by (one-way) (inherited)

  • None.

Associated by (one-way)

Associated with (two-way) (inherited)

  • None.

Associated with (two-way)

  • None.

Composed of (two-way) (inherited)

  • None.

Composed of (two-way)

Composed of (two-way metadata) (inherited)

  • None.

Composed of (two-way metadata)

Component of (two-way) (inherited)

  • None.

Component of (two-way)

Constraints

Clarifications

1An association between two <DRM Feature Representation> instances indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

2An association between a <DRM Geometry Hierarchy> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

3An association between a <DRM Property Grid> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) represented by the <DRM Feature Representation> instance and the <DRM Property Grid> instance (or some specific cell data within that <DRM Property Grid> instance) have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship. Each associated <DRM Property Grid> instance indicates whether the entire <DRM Property Grid> instance or only some specific cell data within it is participating in the relationship in question.

4An association between two <DRM Feature Representation> instances indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

5An association between a <DRM Geometry Hierarchy> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) that they represent have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship.

6An association between a <DRM Property Grid> instance and a <DRM Feature Representation> instance indicates that the environmental object(s) represented by the <DRM Feature Representation> instance and the <DRM Property Grid> instance (or some specific cell data within that <DRM Property Grid> instance) have the semantic relationship indicated by the <DRM Base Association Data> link object on the association relationship. Each associated <DRM Property Grid> instance indicates whether the entire <DRM Property Grid> instance or only some specific cell data within it is participating in the relationship in question.

Example(s)

  • A wide variety of spatially located entities, including roads, railroads, streams, rivers, lakes, bridges, buildings, built-up areas, forests, fields, political boundaries, powerlines, and airfields can be abstractly represented as <DRM Feature Representation> instances. <DRM Feature Representation> instances may be organized into thematic layers, if desired.